Add: PrismLauncher (Minecraft)

[Lazorne]

https://github.com/PrismLauncher/PrismLauncher

PrismLauncher will later allow you to launch separate Minecraft instances via just CLI after talking to them. We could in theory add a Minecraft system and populate it with the games from Prism Launcher and allow it to be launched via RetroDECK.

roms/minecraft saves/minecraft

After a debate inside the community:

Minecraft is Retro

It should use the .desktop shortcut format

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Builds

• Flatpak https://flathub.org/apps/org.prismlauncher.PrismLauncher
• GPL

[Lazorne]

Configs

The default rom folder should be:

roms/minecraft

It should just use the standard desktop files, generated via the GUI like RPCS3.

The rest is done via:

prismlauncher.cfg

[General]


CentralModsDir=$rdhome/mods/minecraft/mods

# Central mod repo

DownloadsDir= (DEFAULT)

# This is where it defaults looking for downloaded mods, standard is the downloads folder. We could also do $rdhome/mods/minecraft/download_mods

IconsDir=$rdhome/saves/minecraft/icons

# Icons used by the shortcuts and gui when installing modpacks

InstanceDir=$rdhome/saves/minecraft/instances

# The world and saves and everything

SkinsDir=$rdhome/saves/minecraft/skins

# Where all the skins are saved

JavaDir= (DEFAULT)

# Shipped within the flatpak, don't change the path

JvmArgs="-XX:+UnlockExperimentalVMOptions -XX:
+UnlockDiagnosticVMOptions -XX:+AlwaysActAsServerClassMachine -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:NmethodSweepActivity=1 -XX:ReservedCodeCacheSize=400M -XX:NonNMethodCodeHeapSize=12M -XX:ProfiledCodeHeapSize=194M -XX:NonProfiledCodeHeapSize=194M -XX:-DontCompileHugeMethods -XX:MaxNodeLimit=240000 -XX:NodeLimitFudgeFactor=8000 -XX:+UseVectorCmov -XX:+PerfDisableSharedMem -XX:+UseFastUnorderedTimeStamps -XX:+UseG1GC -XX:MaxGCPauseMillis=37 -XX:+PerfDisableSharedMem -XX:G1HeapRegionSize=16M -XX:G1NewSizePercent=23 -XX:G1ReservePercent=20 -XX:SurvivorRatio=32 -XX:G1MixedGCCountTarget=3 -XX:G1HeapWastePercent=20 -XX:InitiatingHeapOccupancyPercent=10 -XX:G1RSetUpdatingPauseTimePercent=0 -XX:MaxTenuringThreshold=1 -XX:G1SATBBufferEnqueueingThresholdPercent=30 -XX:G1ConcMarkStepDurationMillis=5.0 -XX:GCTimeRatio=99 -XX:G1ConcRefinementServiceIntervalMillis=150 -XX:G1ConcRSHotCardLimit=16 -XX:AllocatePrefetchStyle=3 -XX:+UseTransparentHugePages"

## Optimizations could be shipped default for Linux and Steam Deck.

Documentation

We should recommend people to use the contoller mods that enable controller support in Java.